When I click on the above link it says text is empty =/
Anyway this should answer your question.
dsl-1.4-embedded.zip
note:ends in ".zip" for windows
DSL Embedded » Running DSL within Windows using the QEMU virtual machine program.
DSL Embedded has no access to the hardware so it is not possible to mount hard disk partitions from within it.
Syslinux or Isolinux
dsl-1.4-syslinux.iso vs. dsl-1.4.iso
The 'syslinux' version emulates a single floppy at boot time. Therefore there are fewer drivers in the syslinux version since they must all fit within a single floppy-sized file. The reason Knoppix and the other derivatives went with 'isolinux' (dsl-1.4.iso), is that there is no single floppy size limitation. The isolinux version has many more drivers to support booting from newer computers.
So why do we have both? On some older computers the BIOS requires that emulated floppy image be there or it won't boot. That is why we say if you cannot boot from the isolinux version, try the syslinux version. Or if you have an older computer it is probably best to start with the syslinux version.
Hope this helps.
Source:
http://www.damnsmalllinux.org/wiki/i...ux_or_Isolinux